Call Cognite Function

Invoke any deployed Cognite CDF Function, poll until it completes, and return a typed, schema-validated result.

Overview

The CDF Functions API uses a three-step protocol:

Session nonce — exchange the current user token for a short-lived nonce so the function can make authenticated API calls on the user's behalf.
Invoke — POST to the function's /call endpoint with your input data and the nonce.
Poll → fetch — GET the call status in a loop; once "Completed", GET the /response endpoint.

Every API response is validated with Zod, so schema drift surfaces as a clear ZodError at the call site instead of an undefined three layers down. The function's own output payload can also be validated against a caller-supplied schema — which doubles as the source of the return type.

Files

File	Purpose
`code/cogniteFunctionService.ts`	Framework-agnostic async function with Zod validation. Zero React deps. Copy into `src/services/`.
`code/useCogniteFunction.ts`	React Query (`useMutation`) hook wrapping the service. Copy into `src/hooks/`.

call-cognite-function

Call Cognite Function

Overview

Files